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v M. W. R. SEIPP. STOVE FOR DKISINFECTING A'ND GNSUMING EXGREMBNT AND 'REFUSE 110,541,016. Patented June 11,1895.

VUNITED STATES PATENT OFFICE.

MAXIMILIAN WILHELM REINHARDT SEIPP, OF BERLIN, GERMANY.

STOVE FOR DISINFECTING AND CONSUMING EXCRl-IMENT AND REFUSE.

SPECIFICATION forming part of Letters PatentNo. 541,016, dated June 1 1, 1895.

Application filed May 19, 1,894. Serial No. 511,810. (No model.)

To al? whom, it may concer-u:

Be It known that 1, MAXIMILIAN WILHELM REINHARDT SEIPP, of Berlin, German Empire,

, This invention relates to a stove combined v tion chamber.

`with a closet for disinfecting and burning eX- crement and household refuse, with the 0bject of entirely preventing any possibility of the same exerting a deleterious influence on health. It also has this important advantage that the air necessary for combustion is drawn from the closet chamber through the waste pipe, and thereby bad smells and deleterious fumes are entirely prevented from rising into the closet chamber, and further that the `urine arising from the use of the closet is simultaneously evaporated by the gases of combus-` tion, and the vapor resulting therefrom is alsodrawn through the ire and thus made thoroughly harmless.

The essential arrangement of the stove consists of two hollow rollers on which the excrement or household refuse falls, and between Which, by the rotation of the rollers, the same is conveyed into the actual combus- The rollers are loosely supported on two shafts revolving intermittently, the distance between the axes of said shafts being somewhat less than half the distance across the two hollow, rollers so that the latter may separate laterally to any suitable extent for the passage of the excitement, and thus a stoppage can never take place, while, at the same time, by the tendency of the rollers to constantly return into the position of equilibrium, a tight joint is always automatically formedl between the rollers, and thus a reliable shutting-off of the furnace gases from the the closet chamber is uninterruptedly obtained. This shutting o is the more effectively produced by the coaction of the excrement itself, as the latter each time the closet is used, is ground between the rollers by their rotation which then takes place, and evenly distributed over the whole length of the rollers, and the excrementitious matter thus acts precisely as a means for forming the joint.

This improved stove is shown 0n the accompanying drawings.

Figure 1 is a vertical section through the rollers; Fig. 2, a horizontal section above the grate, and Fig. 3 a vertical section in the l0ngitudinal direction of the rollers. Fig. 4 is an outside view looking from the left toward Fig. 3.

The two shafts cp and a (Fig. l) on which the hollow rollers W W hang, run in ball bearings b b (Fig. 3) which are fastened in slots inthe sheet iron outer wall of the stove. Each of the two shafts a and a has, at a distance from the fireclay lining of the stove,

two blocks c c which are turned off conically on the inner side, as may be seen in Fig. 3. On this conical surface, the hollow rollers W W hang with their edges, which are also suitably conically turned off. The shafts a a are supported in such a way that the distance Ybetween the two axes of the shafts is somewhat less than the distance rr', Fig. Lwhich is half the length across the two rollers W W.

This has the effect of imparting to the rollers y a tendency to constantly close the passage for the excrement.

The lever bars h h and h2 (Fig. 4) which are connected with the closet door by means of a draw chain d are operated each time the door is opened, and thus both shafts a and a are SoA revolved by means of the ratchet mechanism y Y e and e in such a way that the two rollers NV W are moved inV the direction indicated by the arrows l and 2 in Fig. 1. The connection,

f hereinbefore mentioned, of the rollers and the blocks c and c' on the shafts, by means of the conical surfaces, causes the rollers to be carried around with certainty. If necessary, the rollers may be provided with teeth on their inner surfaces in which suitable gearing, arranged on the blocks c and c engage. By this rotation of the rollers W W', the excrement lying between the same is ground up vand simultaneously distributed over the length of the rollers, so that the latterV are coated with a moist layer of excrement which on the further rotation of the rollers, in the case of the roller W, which lies over the grate R, is gradually brought more and more within range of the tire, and is thus irstdried, and then falls from off the roller in the form of a scale and is finally burned. The ashes fall on the grate R, or through the same into the ashpan k (Fig. 1). The roller W is so cooled by ICO the current of fresh air passing over the same, in the direction of the arrow 3 (Fig. l) that the layer of excrement adhering thereto will always contain some moisture and remain sticky. This in combination with the considerably stronger heating of the roller W, has the advantageous effect, that, first, the fresh falling excrement adheres almost exclusively to the roller )V and thus is brought within reach of the intense fire and thereby consumed, and, secondly, it prevents a caking together of the two rollers, and, thirdly, constantly produces a tight joint between the rollers and thus exactly, at this very important place, causes the certain shutting off of the combustion chamber from the waste pipe t' of the closet.

lf, as frequently may be the case with household refuse, larger and harder articles fall onto the rollers, they cause a correspondingly greater lateral separation of the rollers. As soon, however, as the articles have passed the rollers, the rollers immediately again swing together by their own weight and thus close the passage.

Only a small portion of the urine reaches the rollers. The main portion fiows down the front of the tube t' and is received at the arrow 4t (Fig. 1) by a plate-Z, which conveysthe urine to a slot m through which it falls in the direction of the arrow 5 into a passage n constructed in the stove, which passage conveys it into a collecting vessel 0 arranged beneath the ashpan with its edges resting on projecting flanges of the sheet metal walls which are here built in. This collecting vessel closes the passage 'n at the bottom and may, when the ashpan has been removed, also be lifted out.

The air necessary for combustion is also simultaneously drawn through the passage n in the direction of the arrow 3. In consequence ofthe waste pipe i being built with a tight joint into the stove, andthe shutting off of the roller W' on the inner upper edge p of the passage n as well as the shutting-off of the roller W against the partition q which is arranged over the same and which extends to the top of the stove, this air can only be drawn through the closet pipe/1I. In this manner the rising of fumes to the closet chamber is entirely prevented and all such fumes and vapors are on the other hand immediately and constantly drawn oli:l and conveyed through the fire which is maintained on the grate R. The gases of combustion pass away over the tire bridge s at both sides of the passage n (Fig. 2, arrows 6 and 7) and this produces a preliminaryheating of the fresh air and then passover the bottom and the sides ot' the collecting vessel 0 (Fig. 1) so that the urine contained therein is evaporated. The Vapor hereby produced is carried along with the draft of fresh air and'conveyed in the direction of the arrow 8 through the grateR into the tire, so that this vapor is rendered entirely harmless, and is drawn` olf with the gases from the fire through the draft pipe connected with the opening t to the chimney. The lever bar arrangement 7L, 7i and l1.2 by means of which the intermittent rotation of the rollers is produced, also serves for shaking up the grate R. For this purpose the grate, which according to the size ofthe stove consists of one, two or more fire plates (Fig. 2), placed side by side, rests at one end on a bar 1t (Fig. l), while the other end of each grate bar is `held by a hook n (Fig. l, 2 and 3) all of these hooks being fastened in a rectangular bar tu, which is placed in a larger slot tu (Fig. l) of the sheet metal plates, which are built into the stove, and at the same time form the sides of the passage n, and which carries a fixed lever h3 on the end which projects through the outer wall of the stove. This lever h engages, by means of a pin h4 (Fig. 2) in the slotted eyelet h5 (Fig. 4) of a bar its movably attached to the lever 7e, so that toward the end of the movement of the lever h, which takes place on the opening of the closet door, the bar h6 lifts somewhat the pin h4, and thereby produces a small outward movement of the lever h3 and with it of the rod tu with the hooks 0, and thus causes a shaking up and freeing from cinders ofthe grate R.

`A pin or bar :c (Fig. 1) is fastened on the rectangular bar w, which bar xserves as a point of support for the upper grate R', so that,\on the movement of the bar w, this upper grate also undergoes a shaking up, and thereby a suitable downward movement of the fuel contained in the charging hopper f l/ is produced. It may also be noted, that the lateral separation of the rollers, which takes place on the passage of the excrement between them, also causes a shaking up of the fuel, which produces a slipping down of the same. This takes place by means of the roller )V which is in contact with this fuel, and this shaking up of the fuel requires a certain amount ot' attention, as the above named lateral separation, or displacement is almost exclusively performed by means of this roller W, while in order to prevent smoke passing between the roller W and the sidep (Fig. l) of the passage n, this second roller W must be so arranged that there is constantly maintained as reliable a tight joint as possible along this side p, even when the roller is clean.

In order to partially relieve the rollerVV from the pressure of the fuel lyingI above the same, a hinged tlap q (Fig. l) may be arranged on the inner partition q of the fuel chamber or chute, which flap rubs with its under edge on the roller W, and thus also serves to clean this roller. As the flap q is also turned on its pivot when the roller W undergoes a lateral movement, the fuel resting ou the fiap also experiences a certain amount of shaking up.

A partition firmly built into the oven may of course be arranged instead of the i'lap q', which would require to stand off in any case all the way down as well as at the lower edge, so far from the roller W that the latter may ICO IIO

from the charging chute y, when the same is.

opened for the purpose of inserting fresh fuel, the following arrangement is made: The plate Z, which serves for carrying off the urine, is

- movable on hinges Z (Fig. l) and hangs on a bar Z2, which is held by means of'a spring Z3, (Figs. l, 3 and 4) which is attached to the lid of the stove by one end, and projects with the other end. The hanging bar Z2 is provided at its upper end with a screw thread so that by means of a screw nut Z4, the bar and therewith the plate Z, may be adjusted according to requirements. Further on the lid of the stove, an elbow lever is movably arranged on a pivot e' (Fig. 4), the longer arm z' of which lever lies on the lid 'y' of the charging chute or hopper, so that, when the lid y is opened, the elbowlever makes a corresponding movement outward. By this means a second lever z5, which is movable on a pivot a4 also fastened on the lid of the stove, iscaused to make an outward movement by means o f a bar z3, hinged to the shorter arm z2 of the elbowy 1ever. This second lever z5 then presses down by means of a projection ze the above mentioned spring Z3, so that the point of suspension of the bar Z2 descends in such a way that the plate Z rests on the roller W and thus entirely shuts off the draft of air passing through the passage n.

The draft exerted on the fire from the chimney can then only cause the in-draft of fresh air through the open fuel chute, and thus, on the opening of the lid y of the latter-,any escape of smoke is entirely prevented. In order, however, that when the ashpan Zt (Fig. l) is'drawn out, as well also as the urine holder 0 for the purpose of emptying the same, the ila me on the pushing up of the sliding door S (Figs. l and 2) which gives access to these parts, shall not emerge through the opening exposed. A bar s is attached to the sliding door and carries a handle s2 (Fig. 2), which bar s fits into a socket s3 attached to the wall of the stove, and, on the door being pushed up, immediately strikes on the projecting longer arm a of the above named elbow lever,which arm z projects over the edge of the lidyand forces the workmanV attending tothe stove to first adjust this elbow lever and thus to shut off the draft of air passing through the passage 'n in the manner hereinbefore described,

so that when the sliding door S is subseqnently pushed up, the air for the combustion is drawn in through the opening thus caused. The thoroughly sterilized residue,

which remains in the vessel o after the evaporation of the urine, forms a valuable substance, by far the largest part of which consists o f salts very suitable for manurial purposes.

Having now particularly described and ascertained the nature of mysaid invention and in what manner the same is to be performed, I declare that what I claim isl'. A stove for consuming refuse, comprising a combustion chamber providedfwith a grate, an inlet pipe for the refuse and an air passage leading from the inlet pipe to below the grate, in combination with two rollers below the inlet pipe and closing the passage between the inlet pipe and the combustion chamber, rotatable shafts carrying the said rollers,

the distance between the axes of the said shafts being less than half the distance across the l rollers below the inlet pipe and closing the passage between the inlet pipe and the combustion chamber, shafts carrying the two rollers, with a system of levers connected to the said shafts and to the grate to be actuated from outside the stove and adapted to intermittently rotate the said shafts and to shake the grate, all substantially as and for the purposes set forth.

3. In a stove for consuming refuse, the corn bination of a combustion chamber, an inlet pipe for the refuse, and rotatable rollers below the inlet pipe and closing the passage between the inlet pipe and the combustion chamber, with a plate extending below the front part of the inlet pipe, and a collecting and evaporating vessel around which the gases of combustion are caused to pass, all substantially as and for the purposes set forth. I

4. In a stove for consuming refuse, the'combination of a combustion chamber provided with a grate and a charging chute, an inlet pipe for the refuse, and an air passage lead-- ing from the inlet pipe to below the grate, androtating rollers below the inlet pipe and closing the passage between the inlet pipe and the combustion chamber, with a pivoted plate extending below the front part of the inlet pipe and means for automatically moving the said plate to close the air passage when the lid of the charging chute is raised, substantially as and for the purposes set forth. i

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

liIAXIllIILlAN WILHELM REINHARDT SEIPP.

Witnesses EMIL T. HOFFMANN, W. HAUPT.

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